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| 移动床粉煤干馏炉一维数学模型的建立 | |
| 引用本文： | 梁鹏,曲旋,田原宇,乔英云,毕继诚.移动床粉煤干馏炉一维数学模型的建立[J].山东科技大学学报(自然科学版),2009,28(6):79-84. |
| 作者姓名： | 梁鹏 曲旋 田原宇 乔英云 毕继诚 |
| 作者单位： | 1. 山东科技大学,化学与环境工程学院,山东,青岛,266510;中国科学院,山西煤炭化学研究所,山西,太原,030001 2. 中国科学院,山西煤炭化学研究所,山西,太原,030001 3. 山东科技大学,化学与环境工程学院,山东,青岛,266510 |
| 基金项目： | 煤转化国家重点实验室开放基金项目，山东省中青年科学家奖励基金项目 |
| 摘 要： | 以煤气-煤-循环灰三相传热机理和煤热解反应方程为依据,建立了以高温循环灰为热载体的移动床粉煤干馏炉的一维数学模型。根据不同的操作条件,分别对三相温度轴向分布规律和煤热解产物产率进行了模拟计算,微分方程组采用等步长的四阶Runge-Kutta数值积分方法进行求解。结果表明,煤颗粒在进入干馏炉后被快速加热,对于小粒径煤,升温速率可达600 K/min以上,煤粒径和灰/煤混合比分别对煤粒的升温速率和热解反应温度有显著的影响。 |
| 关 键 词： | 煤热解 传热 数学模型 |
The Establishment of One-dimensional Mathematical Model for Moving-bed Fine Coal Distillation Furnace |
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| LIANG Peng,QU Xuan,TIAN Yuan-yu,QIAO Ying-yun,BI Ji-cheng.The Establishment of One-dimensional Mathematical Model for Moving-bed Fine Coal Distillation Furnace[J].Journal of Shandong Univ of Sci and Technol: Nat Sci,2009,28(6):79-84. | |
| Authors: | LIANG Peng QU Xuan TIAN Yuan-yu QIAO Ying-yun BI Ji-cheng |
| Institution: | LIANG Peng,QU Xuan,TIAN Yuan-yu,QIAO Ying-yun,BI Ji-cheng( 1. College of Chemical and Environmental Engineering, SUST, Qingdao, Shandong 266510, China 2. Shanxi Institute of Coal Chemistry, CAS, Taiyuan, Shanxi 030001. China) |
| Abstract: | Based on the mechanism of three-phase heat transfer of gas,coal and circulative ash and reaction equation of coal pyrolysis, an one-dimensional mathematical model of the moving bed fine coal distillation furnace was set up taking the high temperature circulative ash as a heat carrier. According to the different operation conditions, the axial distribution of three-phase temperatures and the yield of coal pyrolysis outcome were simulated. The differential equations were solved by fourth order Runge Kutta numerical integral method with equal step length. The results show that the temperature of coal particles increases quickly, with a heating rate being above 600 K/min for small coal particles. The size of coal particles and blending ratio have significant influence on the heating rate and the pyrolysis temperature of coal particles respectively. |
| Keywords: | coal pyrolysis heat transfer mathematical model |
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